I know on my 550 I had to get well stocked in Torx wrenches. I cant recall how large the seat belt & ROPS nuts & bolts are but I'm guessing 19 or 20mm. If buying a new set I'd get one that hits each size up to maybe 20mm. And don't forget a good Crescent wrench. It can sometimes get you out of a bind when you don't have the correct wrench or are too lazy to walk across the shop to get it.